Implementation of an acoustic echo canceller based on NLMS-neural networks structures by using the VHDL

摘要: A cascaded pipelined recurrent neural network/NLMS structure is employed in an attempt to model the room/speakerphone transfer function and acoustic path a hands-free environment. To investigate feasibility of practical hardware implementation proposed structure, this paper aims at implementing network NLMS algorithms by using VHDL. VHDL name IEEE 1076 Hardware Description Language standard for very high-speed digital circuits design. Galileo, RTL/logic synthesis tool, has been used order generate gate level structure. The Xilinx family chosen as target technology.